linux-kernel - Re: [PATCH v3] sctp: fix refcount bug in sctp

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Message-ID: <CAJRQjoedC4PTycGEpv_pCfbzW9zaA+kz2JTJaTi-EDWxcPUvFA@mail.gmail.com>
Date:   Sat, 21 Mar 2020 07:36:24 +0800
From:   Qiujun Huang <hqjagain@...il.com>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
        "David S. Miller" <davem@...emloft.net>, vyasevich@...il.com,
        nhorman@...driver.com, Jakub Kicinski <kuba@...nel.org>,
        linux-sctp@...r.kernel.org, netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, anenbupt@...il.com
Subject: Re: [PATCH v3] sctp: fix refcount bug in sctp_wfree

On Sat, Mar 21, 2020 at 1:10 AM Eric Dumazet <eric.dumazet@...il.com> wrote:
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> This does not really solve the issue.
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> Even if the particular syzbot repro is now fine.
>
> Really, having anything _after_ the sock_wfree(skb) is the bug, since the current thread no longer
> own a reference on a socket.

I get it, thanks.

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